Multiscreen Social TV System: A Mixed Method Understanding of Users’ Attitudes and Adoption Intention

Past social TV (STV) system user studies usually tested a small number of trialists in lab settings in Western countries. This Asian research took a mix method approach (interview, observation, and web survey) to examine the attitudes of 76 young adults’ experiences of using a multiscreen STV system. The results show that the majority of participants preferred shifting and complementary patterns when using STV. Their favorite feature was multiscreen video teleportation via QR codes. Nearly half of participants agreed that sociability features of the STV system could facilitate their perceived social presence and sense of community, which increased adoption intention. Additionally, text messaging was selected as the preferred mode for social interactions during video viewing. Although most participants liked the user-friendly design to upload and share videos conveniently, age has a negative association with users’ receptiveness of the user generated video channel creation and aggregation feature.     

Differential graphical games for H∞ control of linear heterogeneous multiagent systems

Differential graphical games have been introduced in the literature to solve state synchronization problem for linear homogeneous agents. When the agents are heterogeneous, the previous notion of graphical games cannot be used anymore and a new definition is required. In this paper, we define a novel concept of differential graphical games for linear heterogeneous agents subject to external unmodeled disturbances, which contain the previously introduced graphical game for homogeneous agents as a special case. Using our new formulation, we can solve both the output regulation and H_∞ output regulation problems. Our graphical game framework yields coupled Hamilton‐Jacobi‐Bellman equations, which are, in general, impossible to solve analytically. Therefore, we propose a new actor‐critic algorithm to solve these coupled equations numerically in real time. Moreover, we find an explicit upper bound for the overall ‐gain of the output synchronization error with respect to disturbance. We demonstrate our developments by a simulation example.     

The Analysis of the Loss of the Traction Effect during an Intensive Start of a Vehicle

Journal of Computer and Systems Sciences International - The effect of a significant and sudden loss of the greatest possible average traction during a vehicle’s intense acceleration is found...     

Model of Representation and Acquisition of New Knowledge by an Autonomous Intelligent Robot Based on the Logic of Conditionally Dependent Predicates

Journal of Computer and Systems Sciences International - The model for the representation of declarative and procedural knowledge of an autonomous intelligent robot is developed without reference...     

Control over a Resource Source with Minimization of Its Required Capacity

Journal of Computer and Systems Sciences International - A method for searching for an optimal law of control over a limited resource source is proposed. Among the examples of sources from the...     

Technology for the Visual Inspection of Aircraft Surfaces Using Programmable Unmanned Aerial Vehicles

Journal of Computer and Systems Sciences International - The technology for the visual inspection of aircraft surfaces using programmable unmanned aerial vehicles (drones) is presented. When...     

Bringing an Insectomorphic Robot to a Normal Position from an Abnormal Upside Down Position

Journal of Computer and Systems Sciences International - It is shown that if a robot’s body has an upper shell in the shape of a truncated cylinder, then a six-legged insectomorphic robot can...     

Detection of Cylindrical and Spherical Surfaces and Determining Their Parameters in Segmentation of Range Images

Journal of Computer and Systems Sciences International - An analytical solution of the problem of estimating the coordinates of the axis of a cylindrical surface and its radius by processing range...